Pool Pump Troubleshooting: Common Problems and Fixes

Your pool pump is the heart of your swimming pool system. It circulates water through the filter, heater, and chlorinator, ensuring clean, clear, and safe water. When your pump isn’t working properly, your entire pool system suffers.

At Pallett Pool and Spa, we’ve helped many Mississauga pool owners diagnose and fix common pump issues to keep their pools running smoothly. Here’s a guide to the most frequent pump problems and how you can troubleshoot them.

1. Pump Won’t Turn On

Possible causes:

• Power supply issues (tripped breaker, blown fuse)

• Faulty timer or switch

• Motor failure

What to do:

• Check your circuit breaker and reset if needed.

• Inspect the timer and pool switches for any damage or misconfiguration.

• If power is reaching the pump but it still won’t start, call a professional for motor diagnostics and repair.

2. Pump Runs But No Water Flow

Possible causes:

• Clogged pump basket or filter

• Air leaks in the suction line

• Closed valves or blocked pipes

What to do:

• Turn off the pump and clear out debris from the pump basket.

• Check all valves to ensure they are open and functioning correctly.

• Inspect pump lid o-rings and plumbing fittings for air leaks. Tighten or replace parts if necessary.

3. Pump Makes Loud or Strange Noises

Possible causes:

• Debris caught in the impeller

• Worn bearings or motor issues

• Cavitation caused by air leaks

What to do:

• Turn off the pump and inspect the impeller for debris. Clean if needed.

• If noises persist, the motor bearings might be worn and require professional servicing or replacement.

• Ensure no air is entering the system to prevent cavitation.

4. Pump Overheats and Shuts Off

Possible causes:

• Blocked airflow around the motor

• Motor running dry or with insufficient water

• Electrical problems

What to do:

• Make sure the pump motor has adequate ventilation. Remove any obstructions.

• Check water flow and make sure the pump isn’t running dry.

• If overheating continues, have an electrician or pool technician inspect the electrical system.

5. Low Water Pressure or Weak Flow

Possible causes:

• Dirty or clogged filter

• Air in the system

• Worn impeller or pump parts

What to do:

• Clean or backwash your filter regularly.

• Check for air leaks in suction lines and seals.

• Consider professional pump maintenance to replace worn components.

Preventative Maintenance Tips

• Regularly clean the pump basket and skimmer baskets.

• Schedule annual professional inspections and tune-ups.

• Keep the area around your pump clean and free of debris.

• Monitor your pool’s water chemistry; improper balance can cause pump strain.

When to Call Pallett Pool and Spa

If you’ve tried these troubleshooting steps and your pool pump problems persist, or if you’re unsure about any repair, don’t hesitate to call the experts. At Pallett Pool and Spa, we provide fast, reliable pump diagnostics and repairs for Mississauga homeowners—helping you enjoy a smoothly running pool all season long.